book Maths Puzzle Numerical Ability

I think this is the right category to put this in

Evaluate the factorial expression.

(n+5)!/n+5

I got n+5! as my answer. is that right?

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book Other Question

Suppose you are at a river and rent a motor boat for five hours starting at 7 A.M. You are told the boat will travel 8 miles per hour upstream and 12 miles per hour returning. You The length of a rectangular frame is 8cm more than the width. The area inside the frame is 105 sq cm. Find the width of the frame.